New! Replacement Trion 5 Inch Air Filter 20x20x5 Sizes.
Amazon.com: Lennox X6673 20 x 25 x 5 Inch MERV 11 Efficient Air Filter Replacement for Healthy Climate HC11 Air Purifier Cleaner Purification Systems (3 Pack) : Home & Kitchen
Filtrete 16x20x1 Air Filter, MPR 300, MERV 5, Clean Living Basic Dust 3-Month Pleated 1-Inch Air Filters, 6 Filters - Amazon.com
Honeywell TRN2427R1/E High Efficiency Air Cleaner Filter 27x25x5
AEM 3 inch x 5 inch DryFlow Air Filter – West Coast Auto Performance